Electrical connecter



May 12, 1931. P. F. WILLIAMS ELECTRICAL CONNECTER Filed June 17, 1922 Patented May 12, 1931 UNITED STATES PATENT OFFICE PAUL F. WILLIAMS, OF CHICAGO, ILLINOIS, ASSIGNOR TO G @t W ELECTRIC SPECIALTY f CO., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOISv ELECTRICAL CONNECTER Application filed .Tune 17,

My invention relates to electrical connecters, particularly such as are commonly known as potheads. The present invention relates more especially to multiple potheads, although in certain aspects .it is applicable to potheads of other kinds.

One of the objects of the invention is to provide a practical and efficient device of the class specified.

Another object of the invention* is to provide an improved and advantageous construction of multiple pothead.

Another object of the invention is to simplify and improve the devices serving as outlets for individual conductors through the top of the bowl forming the body of a multiple conductor pothead.

In the accompanying drawings Fig. 1 is a View partially in elevation and partially in vertical section of a multiple pothead embodying my present invention;

Fig. 2 is a cross section taken on line 2 2 in Fig. 1.

Referring to the drawings, I show a pothead comprising a bowl 1, preferably with upwardly inclined end walls 2 2 and iiat vertical sides 3 3. The wide or enlarged top is open and the narrow or contracted bottom is also open. This bowl may be made of any suitable material, as for example, metal, such as iron, or insulating material, such as porcelain. The lower end of the bowl is provided with a plug member 4 which fits into said lower end and is provided with apertures through which a plurality, as for example two, conductors 5 5 such as cables or overhead conductors may be passed, On the top of the bowl 1 is a flat cover 6 preferably having downwardly extending langes 7 on the outside of the bowl 1.

The cover 6 is provided with outlets 8 8 to permit the leading out of the conductors 5 5. Each outlet 8 has a reduced portion 8a which extends down into the interior of the bowl 1 and is surrounded by a threaded collar 10 which is arranged to screw into the threaded bore or wall of the aperture or opening for said outlet 8 in cover 6. Cover 6 is provided with an annular rim or projection 11 for each outlet, on which the upper or en- 1922.' 'serial no. 569,058.

larged part of the outlet may rest'and a felt or rubber gasket`12 is preferably inserted between j outlet 8 and rim 11. This rim 11 serves a dual purpose in projecting above the general plane of the cover member 6 it assists in guarding the threaded bore from any moisture th at may accumulate on the cover, while its reduced upper edge presents a relatively small surface to the under side of the gasket 12 which will be distorted thereby, thus forming a more efiicient seal in a well understood manner. y

It will be understood that the nature of the materials here necessarily employed have different coefticient of expansion and contraction. When acted upon by changes of temperature and in the absence of provisions to the contrary, these members would be exposed to damage, and in the event of the part 8 becoming cracked, its purpose as an insulator would be defeated.

To this end, there is provided in the construction of the bushing or collar 10, a split at 13 to permit the said collar 10 to contact without undue pressure to the contiguous portion of the member 8 at 8". A further advantage of this construction is that it provides accommodation, as to size, between the collar and the interiorly-threaded portion of the bore or opening in the cover member 6, thus producing maximum contact thereat.

A further precautionary measure against damage to the parts involved is that the collar 10, being normally of greater diameter than the reduced portion 8b, there is a resulting intervening space seen at 8e in full lines .in Fig. 1 of the drawings, and in dotted lines 1n Fig. 2. thus further guarding against break! age. Said collar 10 is provided with a recess or notch 14 into which a lug or projecting key 15 on member 8a is also loosely fitted so that by rotating member 8 collar 10 may be screwed into and out of threaded socket in cover 6. Insulation 16 such as minerallac or a sleeve of rubber or the like is fitted within the member 8 and outside of the conductor 5 so as to form a tight joint between said memb ers 5 and 8. Within the bowl 2 I preferably arrange insulating material 17 such as minerallac or the like.

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Thus a simple and practical arrangement is made by which thecables may be extended into, through and out of the pothead and ma be fitted and insulated in the bowl thereof,

and Yalso so that the outlet devices may be readily applied and maybe very simple and effective in constructionand operation.

It Will be understood that changes and modifications may be made Without depart ing from the spirit of the invention.

What I claim is: z A device of the class specied, comprising a shell, a screw-threaded aperture therein, lan outlet arranged to occupy the said aperture, an exteriorly screw-threaded flexible collar secured to the outlet, a'notch inthe collar, a' Hey in the" outlet*integral'v therewith; the said: keyy engagingthe said notch,A whereby n the-rotation of the outlet'Willtransmitrotaf tion'to' the collar'. Y

In Witness Whereofy hereunto' vsuloscrihe n'r'y'namethis l2thdayoffMay, A. DI, 1922'.

, PAUL'F-WIIJLIAMS 

